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Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Allowances on accounts receivable $ 162,112 $ 354,542
Accumulated depreciation on property and equipment $ 18,194,827 $ 17,926,959
Series A redeemable convertible preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Series A redeemable convertible preferred stock, shares authorized 2,000,000 2,000,000
Series A redeemable convertible preferred stock, shares issued 900,000 900,000
Series A redeemable convertible preferred stock, shares outstanding 900,000 900,000
Series A redeemable convertible preferred stock, redemption value $ 11,104,923 $ 9,000,000
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 800,000,000 100,000,000
Common stock, shares issued 587,255,165 60,091,560
Common stock, shares outstanding 587,255,165 44,563,490
Common Stock, held in treasury, shares 0 15,528,070